Bed-bottom fabric.



entrain srnrns PATENT OFFICE.

BED-BOTTOM FABRIC.

Specification of Letters Patent.

Patented June 13, 1916.

Application filed November 5, 1914. Serial N 0. 870,525.

To all whom it may concern:

Be it known that I, FRANCIS G. GALE, a subject of the King of GreatBritain, residing at Waterville, Province of Quebec,

7 Dominion of Canada, have invented an Im- This invention relates towire fabric bedbottoms of that typepresenting a diagonal or diamondmesh, and the objectof the invention is to provide a novel constructionfor strengthening the edge of the fabric.

One form of bed bottom of the above type is composed of a plurality ofwires each of which extends from one side to the other of the bedbottom, and each of which is formed to present a flattened helix, theadjacent flattened helices being interlooped to form the completed bedbottom. In bed bottoms of this type as heretofore manufactured each edgeof the bed bottom presents pairs of meeting ends of the helices andthese ends have been connected by links, no connection, however, beingprovided between adjacent pairs of meeting ends.

It is the purpose of my inventionto provide a novel construction forstrengthening a bed bottom of this nature and I accomplish it byextending along each edge thereof a flexible reinforcing member which isconnected to the ends of all the wires, this flexible member preferablybeing in the form of a chain. I

In the drawings wherein I have illustrated a selected embodiment of myinvention, Figure 1 is a plan View of a bed bottom made in accordancewith my invention; Fig. 2 is an enlarged fragmentary perspective viewshowing a portion of one edge of the completed bed bottom; Fig. 3 is aview showing one of the wire helices; Fig. 4 shows another form oftheinvention;

I have shown in Fig. 1 a bed bottom designated generally by 3 which issustained on a mattress frame shown generally at 4, the bed bottom beingsecured to the mattress frame through the medium of a plurality ofcoiled springs 5, as usual in devices of this nature.

The bed bottomherein shown is formed of a plurality of flattened wirehelices 1, such as shown in Fig. 3, each flattened helix extending fromone edge to the other of the bed bottom and the adjacent helices beinginterlooped with each other, as at 2-, as plainly seen in Fig. 2. Thistype of bed bottom is one which is known to the trade; As heretoforemade, however, bed bottoms of this form have been somewhat weak ontheedges' and after considerable use the edges thereof are liable togive way and sag more or less.

It is the object of my invention to strengthen the edges of bed bottomsof this type as stated above. A completed bed bottom made from theseinterlooped flattened helices presents at each edge a plurality of helixends 6, 7 which alternate in direction and position, the ends of twoadjacent interlooped helices extending toward each other and beingsituated closely adjacent each other, while the ends of the next twoadjacent helices are directed away from' each other and are widelyseparated. The two adjacent ends 6, 7 thus constitute a pair of meetingends, andinprior bed bottoms of this nature it has been proposed toconnect the adjacent meeting ends, no connection being provided betweenthe pairs of meeting ends. In order to strengthen and reinforce the edgeof a wire fabric bed bottom of this nature, I propose to employ aflexible reinforcing member along each edge there of to which all of thehelix ends are secured, and in the illustrated embodiment of myinvention, this reinforcing member is in the form of a chain 8 whichextends along each edge of the fabric and into the links of which thehelix ends 6 and 7 are secured. As shown in Fig. 2 the end of each helixis formed into a loop 9 which is interlooped with one of the links ofthe chain 8, and if desired the links of the chain 8 may be of such alength that the loops 9 of the two adjacent ends 6, 7 constituting eachpair may be looped into the same link 10, although this particulararrangement is not essential. This chain 8 provides a connection notonly between the two meeting ends 6, 7, but also between the adjacentpairs of meeting ends and constitutes areinforcing member which fere atall with this folding or collapsing of the wire fabric, and it,therefore, has advantages over a stiff or non-yielding reinforcing edge.When, however, the chain is strengthened, as is done when the fabric isplaced on the mattress frame 4, it is perfectly taut and will hold theedge of the fabric from stretching and from consequent sagging.

In the construction shown in Fig. 2 the loops 9 at the helix ends formlinks in the chain 8. In Fig. 4 I have shown another embodiment of theinvention wherein the chain at the edge of the fabric is continuous,this chain being shown at 80 and being made up of a plurality of links90. In this embodiment the loops 9 at the ends 6 and 7 of, the helices 1are connected to the same link '90 of the continuous chain. In otherCopies of this patent may be obtained for FRANCISG. GALE. IVitnessesLoUIs C. SMITH, THOMAS J. DRUMMOND.

five cents each, by addressing the Commissioner of Patents.

Washington, 10.0.

